We saw this bird from the bus as we made our way through Simien Mountains National Park in the Ethiopian highlands (and I do mean high: elevations of 7,000 to 10,000 feet) in late October.

I spent quite a bit of time on Google today looking at photos of marvelous raptors whose ranges include Ethiopia, all to no avail.

The closest I came was the Short-toed Eagle, but none of them were as pale as this individual. In fact, except for the Osprey, which this clearly is not, all the large African raptors I could find were considerably darker and/or had crests. Also, and this could have been a function of the other birds' poses when photographed, none of the raptors I looked at on the Web had the lovely feathery legs this guy has.

Any suggestions as to who we're looking at here?